I've had trouble finding the language I needed to edit, because they appear to be listed in random order:
I don't understand the order; is that in order of popularity...? That can change at any time. Do you know what doesn't change? The order of the alphabet. So how do we get it to be ordered by something constant rather than randomly subjective?
If the reason to have it unordered is because JetBrains wants the 'General' option to be at the top, OK, well, it's probably possible to have that still at the top, with a thin horizontal bar separating it from the alphabetized options below it.
Or, the General view can be moved to the Color Scheme view, which is currently empty: